Pump-valve.



'No. 708,508. Patented Sept. 2, I902.

D. C. WORD.

PUMP VALVE.

(Application filed May 6, 1902.) (N0 Model.)

n[ I J w I 73 3 ,%-/0 16 77 7e 7 DAVID C. WORD, OF ST. LOUIS, MISSOURI,ASSIGNOR OF ONE-FOURTH TO B. HUFFT, OF ST. LOUIS, MISSOURI.

PU lVl P-VALVE.

SPECIFICATION forming part of Letters Patent No. 708,508, datedSeptember 2, 1902. Application filed May 6,1902. Serial No. 106,229. (Nomodel.)

T 0 (tZZ whom, it may concern.-

Be it known that I, DAVID C. WORD, a citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Pump-Valves; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to pump-valves; and

it has for its object to provide a construction in which the movablevalve member may be reversed when it has become worn to present a newwearing-face, and thus increase the life of the valve, a further objectof the invention being to provide against leakage through the Valve,between the working parts thereof, and to deflect the water, so that itwill not interfere with the proper working of the valve.

A further object of the invention is to provide a valve and its seat ofsuch material as will not be afiected by alkaline waters, so that theefficiency of the valve will not decrease.

Other objects and advantages of the invention will be understood fromthe following description.

In the drawings forming a portion of the specification, and in whichlikenumerals of reference indicate similar parts in the several views,Figure l is a vertical section through a portion of a pumpbarrelequipped with a valveembodyingthe presentinvention. Fig. 2 is a viewsimilar to Fig. 1 and showing a difierent form of valve, parts thereofbeing in elevation.

Referring now to the drawings and more particularly to Fig. 1, there isshown at 5 a portion of a pump-barrel in which is disposed a valve-seat,including an outer annular memher 6 and an inner annular member 7,connected by means of spokes S, the member '7 being internallythreaded,as shown.

The valve proper consists of a hollow cylindrical body 9 of suchdiameter as to insure the end of the cylindrical body resting upon themember 6 of the valve-seat, intermediate of the inner and outer faces ofthe latter, the contacting faces of the valve and the member 6 beingflat to insure against leakage of water between them when they are incontact.

Centrally of the member 9 is ail-annular hub 10, which is connected withthe member9 by a continuous web 11, the hub 10 having a centralcylindrical bore 12 in axial alinement with the bore of the member 7 ofthe valveseat. A spindle 13 is provided, the lower end of which isthreaded and screwed into the member 7 of the valve-seat, so that saidspindle forms a part of the valve-seat, and at the upper end of thespindle is an enlarged head 14. Previous to engagement of the spindlewith the member 7 of the valve-seat it is passed through the hub 10 ofthe valve, and the head of the spindle is spaced sufficiently far fromthe valve-seat member 6 to permit the cylindrical body 9 to rise tolheproper height to insure sufficient operation of the pump before theupper end of the hub 10 strikes the head 14. The outer periphery of thehub 10 of the valve is threaded both above and below the web 11 topermit of engagement of an im perforate cap 15, which incloses the upperend of the spindle 13.

In Fig. 1 of the drawings the valve is shown in closed position, and itwill be seen that the cap 15 prevents water in the upper part of thepump-barrel from passing downwardly or leaking between the spindle andthe hub 10, it being understood that while the fit of the spindle in thehub may initially be sufficiently close to prevent this leakage to anyappreciable degree it will increase as the valve becomes worn, thusnecessitating priming of the pump.

In Fig. 2 of the drawings there is shown a construction which is thesame as that shown in Fig. 1,with the exception that the bore of the hub10 thereof is countersunken as shown at 16 to receive the head 14 of thespindle 13, so thata shorter spindle may be used,or the rise of thevalve may be increased. Furthermore, in this form of the invention adeflector 18 is formed upon the spindle 13, said deflector terminatingin an upper disk 19, which lies with its under face flush with the loweredge of the valve when the latter is raised, and thus by directing theflow of water across the lower edge of the valve prevents the lower faceof the valve from moving beyond a cer tain distance above the valve-seateven when the Valve has become shortened by wear. In

this form of invention is also shown the cap forpreventingleakage,although it will be understood that the cap may be omitted in bothforms, if desired.

With this construction it will be noted that when one end of thecylindrical body 9 of the valve becomes worn excessively the valve maybe reversed upon the spindle and the opposite end thereof may be used.

I have discovered that phosphor-bronze is unaffected with corrosion bythe natural alkaline Waters, and for this reason I make all parts of thevalve and its seat of phosphorbronze.

In practice other modifications of the invention may be made and anysuitable proportions may be used for the various parts without departingfrom the spirit of the invention.

What is claimed is 1. A valve comprising a seat having a centralupwardly-directed spindle, and a movable cylindrical member having fiatends, and having a central hub and a continuous web connecting the bodyand the hub, said hub being slidably and removably mounted upon thespindle to permit of reversal of the body to bring its ends alternatelyinto cooperative relation with the seat.

2. A valve comprisinga seat having a central stem and openingssurrounding the stem, a hollow cylindrical body mounted slidably uponthe stem for movement with its end into and out of contact with theseat, and a deflecting-plate at the base of the stem, said plateextending upwardly and outwardly over the openings in the seat.

3. A valve comprising a seat having a central stem, a body having acentral hub slidably mounted upon the stem and adapted for engagementwith the seat, and a cap removably engaged with the hub and inclosingthe upper end of the stem.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID C. WORD.

Witnesses:

M. C. DURANT, Jos. J. WOODS.

